SmallCaliberCentral

1) Seating closer to the lands raises pressure, as it doesn't get as good a "run" before contact. 2) 0.2gr of powder change is chasing ghosts, especially with extruded powders, the BR/BD isn't that tight to begin with. Your grouping sounds like a normal factory barrel, shooting long bullet...

Not with extruded powder you don't. BD &BR are tired together, in an inverse relationship. Only volume accounts for any shift. Weight will only account for the change in BD(energy content). For itsy bitsy groups, bullets need to weigh the same, extruded powders and cases need to have the same vo...

Midsouth had it yesterday

Few problems here. 1) Hornady has been badly sandbagging their velocity claims in the 204 for a VERY long time. Run them through your chronograph before you think they are all that fast. 2) there is NO factory ammo that is loaded by weight of ANY powder. Weight is a silly hand loading creation. Fact...

H110's twin is Win 29-something(297?), sorry don't load pistols anymore. http://www.thegunzone.com/556prop.html Remember there are several "issues" to keep in mind here. 1) who made who. Olin has been out of the propellant (and brass) game for quite a while. Hodgdon has switched powder sup...

I completely agree that 748 does that job beautifully!! As you pointed out, CFE has higher Tin/Bismuth compounds, as it comes from SMP842. Which is General Dynamics propellant for the Military Non-Toxic(all copper) 5.56 nato ammo. 748 is VERY close in characteristics to the 846 line, just contains t...

jo191145 wrote: CFE is nothing more than good ol w-748 with even more anti copper fouling additive added.

Not quite, that is a canister blend of SMP842, 748 is a variation off the WC846/844 family.

Been shooting the 55gr. In my 243.
They are accurate enough to do the job, they lack the explosiveness of the tipped competition; but that should be expected.

Bullet weight isn't what you care about for a twist rate. Bullet LENGTH is. It's all about RPM.
http://www.jbmballistics.com/cgi-bin/jbmstab-5.1.cgi

Look up the length and run the calc, give you a nice idea

Bullets aren't hard to find, nor expensive. Midsouth has midsouth branded Noslers on the super cheap. Fired around 1500 to date

Ruger Predator, 204

Great White North wrote: does not even come close to the speed that I can achieve with Benchmark.

Interesting, both of my 8# kegs of CFE produce higher velocities than "expected" per charge. Nothing has been able to match CFE speeds in my Predator

Same with Wa, Shoot 'em all.

I know this is a year-old post, re-visited by a a lpcu.. IF you consider the way powder is made, and HOW the BR is controlled; and remembering that powder is made to a range.... Ball powders "should" be measured by weight, and extruded powders should be measured by volume. H335, BLC-2, Win...